Jacquard weaving machine



May 21, 1929.

A. PWETZ JACQUARD WEAVING MACHINE Filed May 24 1927 4 Sheets-Sheet A. PIVETZ May 21, 1929.

JACQUARD WEAVING MACHINE I Filed May 24, 1927 4 Sheets-Sheet 2 May 21, 1929. A. PIVETZ JACQUARD WEAVING MACHINE Filed May 24, 1927 4 Sheets-Sheet b WRH s oe-n1 01. 0201s Pill/92:7.

May 21, 1929.

A. PIVETZ JACQUARD WEAVING MACHINE 4 Sheets-Sheet 4 v 3140mm tZZow'fu/efy.

Filed May 24, 1927 Patented May 21, 19?.9. i

UNITED, STATES FFICE.

ALOIS PIVETZ, OI FALL RIVER, MASSACHUSETTS.

'J'ACQUARD WEAVING MACHINE.

Application filed May 24,

This invention relates to improvements in the jacquard weaving machine in, which is applied an entirely new and different mechanism, especially with reference to a needle and hook arrangement, a needle safe-guard and in the construction of a machine in the form of a typewriter. The objects of the improvements are, first, to provide considerably shorter needles and hooks as compared with the usual make of machine of this character; second, an immediate adjustment of any part without hampering the production, and third, the reversing of the cylinder of the machine to any card desired. 5

As illustrated in the accompanying drawm s; v

Tigure 1 is a side elevational view of the entire machine with the mechanism outwardly of the machine frame adjustable in the usual manner, 7

Figure 2 is a vertical cross sectional view of the machine showing apart of the mechanism within the machine frame,

Figure 3 is a plan view of the entire machine,

Figure 4 shows top plan and side-views of the needle,

Figure 5 is a side view of a hookand needle with a hook holder and a needle holder, showing the action when the cylinder presses against the hooks,

Figure 6 is a front view of thevhook holder and needle holder, and

Figure 7 is across sectional view of the entire needle and hook mechanism within the machine frame.

A frame A with ribs, rests upon the wooden support connected to the overhead beam and is built in typewriter form. This is, as here explained, of advantage in order to reach the various parts of the interior of the mechanism very easily without being forced to work from the top down as in the present type of machine.

The frame structure and associated mechanism which has been here chosen is in the most simple form and can be adjusted in any manner and by various methods now employed. The motion of the loom connection rods I and J as well as rods z, and i and 7' and j sets cylinder D and knives 7: in corresponding motion. The cylinder D is held from the frame P which is attached to the frame A at p, while knives 70 are set in frame K which moves vertically by the shaft 1927. Serial No. 193,904.

S running through bearings A and A and screwed firmly to la,. The usual catch bar H turns cylinder at d, while same is held in pos tion through the hammer D An important object of this invention is to provide a device to reverse the cylinder to any card desired and there is installed the cylinder =re'verser Ll Z 1,, which pulled by the wire or rope Z lets the reverse bar Z slide through the open support a, while nose Z lifts catch bar and slips onto the lantern (Z, to grip same and reverse the cylinder. Needless to say that the cylinder must be with its pegs (Z, out of needle board E before reversing.

The needle, as shown in Figurevt, consists of astraight Wire or rod bent laterally at its outer end to the form of letter J and the doubled or folded portion bent upwardly and forwardly as shown at f. The needles are in groups of different lengths, the length increasing from the top to the bottom group or bank. Thus, assuming that the needles of the uppermost group or bank are of 4 length, the next group or'bank (second row) will be of 1 longer. This results in the declination of about 15 degrees. Instead of usingvonthe other end, a second needle board, the needle glides through and is easily held in the needle holders ee As shown in Figure 6, two strips of-steel, one o fa thickness and width with notches just wide enough to allow for the: needle, the other somewhat thinner and wide are laid across the hook holder h, and fastened with the bolt 6 so as to accomplish a quick dismounting of any needle or an entire needle row. Compared with the present needles which are not less than 16 in length, the longest needle of this improved mechanism appears, as explained above, about 117 in length. It is evident that this means saving on wire and as there is no pressure or friction, as on present machines through the springs, there is no risk of bending, which often results in loss of time through wearisome and expensive repairs.

The book holder it, is disposed about above the needle holder as illustrated in Figure 6 and is comprised of a thicker strip with notches 72, rounded at the bottom to allow the hook and needle to ride unhampered through the notches. All of the hook holders h, are set into the frame A.

The hook G exactly bent as illustrated in Figure 5 is of thickness which is sulfillO cient to stand the weight on the harness cord, its upper and lower arms being desig nated by the characters 9 and 9 while curve g sits or rides on the rounded notch in the holder.

The whole principle is also shown in Figure 5; the needle and hook, when the cylin der does not press, are illustrated in full lines, while when pressing occurs, it is illustrated by dotted lines in a shifted position.

Theadvantages of this hook are, first, the shortness in comparison to the present hook, second, nonfriction, and third, removal of the hook in an instant, as it is held only by the harness weight.

This invention also includes the provision and installation of the needle-safeguard consisting, of the slotted side bars R and cross bars 1' as plainly shown in Figure 2 in side view, and in Figure 3 in plan view, the slotted side bars It being movable lengthwise on the pins passing through the slots r, on each side in slot 7 the bars in one di rection being moved through hook 7 and passed back through spring 7 In the drawings N designates the side bars or framing of the comber boards '21., which, for the purpose of the invention, are arranged in forwardly descended step-like order, the slope or angle of descent corresponding to that of the frame K.

It is not essential that the interior mechanism be lubricated, as little, if any, friction occurs therein; bearing in mind that any springs or needles are kept away entirely,

it is evident that cylinder has to press with less force and that operation of the machine affords less power, therefore, the pounding is minimized to aslight chatter; there is also no danger of piercing cards with the needles which results in a faulty weave.

I claim:

1. In a jacquard weaving machine of the characten described, a jacquard cylinder mounted on pivoted arms to be swung inwardly and outwardly, means for rotating said cylinder step by step in either direction of rotation, said means comprising a hook toturn the cylinder in a forward direction, a lever and connected arm to turn the cylinder in a reverse direction, and said arm being provided with a curved lifting projectionand said hook being formed with a bend with which said projection co-operates to raise said hook and disengage the same from the cylinder through the movement of the arm.

2. A jacquard weaving machine according to claim 1 provided with spring retractingmeans for withdrawing said arm from engagement with the hook and jacquard cylinder. .3;

3. A jacquard weaving machine comprising a frame for the support of the upper mountings of the machine, above the harness, said frame consisting of side supports connected together by cross bars, and having a forwardly and downwardly sloping upper framing, above which are located the knife frame, and below which are located the needless and comber boards being arranged in forwardly descending step series.

4. A jacquard weaving machine comprising a jacquard cylinder, a series of needles co-operating therewith, and arranged in superposed horizontal groups, the needles varying in length in descending successive groups and terminating at their free ends in reverse bends engaging with the hooks to which the harness ends are attached, a needle board through which the needles pass, hook supports and needle holders below said supports and through which the needles pass.

5. A jacquard weaving machine according to claim 4, provided with a needle guard, comprising slotted side bars and connecting transverse bars, forming guards mama the thrust of the needles, said needle guard be ing movable in one direction by the thrust of the needles and reversely by spring pres sure.

ALOIS PIVETZ. 

